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Detached-Eddy Simulation of Separated Wake Flow Around Complex Helicopter Fuselage Configuration

  • M. FuchsEmail author
  • F. Le Chuiton
  • C. Mockett
  • J. Sesterhenn
  • F. Thiele
Conference paper
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 130)

Abstract

The contribution presents a detailed CFD study of a massively separated flow around a detailed EC135 helicopter fuselage in forward flight. Delayed detached-eddy simulation (DDES) is compared to conventional steady and unsteady RANS. The performance of all approaches is evaluated for two different geometrical configurations at three angles of attack. Excellent agreement of DES to different sets of experimental benchmark data is achieved particularly for the separated wake behind the cabin backdoor. An improvement of predictive accuracy is seen over URANS for both mean statistical quantities as well as unsteady solution content. Limitations to the comparability between CFD and experiment are furthermore discussed.

Keywords

Pitching Moment Forward Flight Reynolds Number Effect Unsteady RANS Vortical Wake 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The EC135 simulations were funded by the EU FP7 CleanSky project HELIDES (CSGA-2010-278415). Computing resources were provided by the North German Supercomputing Alliance (HLRN, www.hlrn.de). The geometries were provided by Airbus Helicopters Deutschland GmbH. The authors also wish to acknowledge fruitful discussions with M. Grawunder, TU Munich.

References

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • M. Fuchs
    • 1
    Email author
  • F. Le Chuiton
    • 2
  • C. Mockett
    • 3
  • J. Sesterhenn
    • 1
  • F. Thiele
    • 3
  1. 1.Technische Universität BerlinBerlinGermany
  2. 2.Airbus Helicopters Deutschland GmbHDonauwörthGermany
  3. 3.CFD Software-Entwicklungs and Forschungsgesellschaft mbHBerlinGermany

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